The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 22, 2020
Filed:
Dec. 04, 2017
Shenzhen China Star Optoelectronics Semiconductor Display Technology Co., Ltd., Guangdong, CN;
Chunhsiung Fang, Guangdong, CN;
Yuanchun Wu, Guangdong, CN;
Abstract
An OLED display device and a manufacturing method thereof are provided. The manufacturing method of the OLED display device realizes the effect of a plurality of non-connected OLED light emitting layers by providing an inverse trapezoidal photoresist in an interval region of a plurality sub-pixels. The produced OLED display device does not have lateral current forming an entire surface distributed cathode over the plurality of OLED light emitting layers of the common layer, that avoiding cross color phenomenon caused by carrier migration between adjacent sub-pixels and ensuring better display effect of the OLED display. Also, by fabricating an auxiliary cathode above or below the cathode and connected thereto, the sheet resistance of the cathode and the uneven brightness caused by voltage drop can both be reduced.